The word "haddest in hand" is spelled using Old English grammar and spelling rules. It is a combination of the verb "to have" in the second person singular past tense form "haddest" and the preposition "in" followed by the noun "hand". The IPA phonetic transcription for "haddest in hand" is /ˈhæd.ɪst ɪn hænd/, with the stress on the first syllable of "haddest" and the second syllable of "hand". This archaic usage may seem unfamiliar to modern English speakers, but it reflects the evolution of the language over time.